THz Spectral Splitters

Download THz Spectral Splitters Datasheet (PDF, 72 KB)

Tydex offers spectral splitters for applications where NIR and MIR radiation has to be reflected without transmission degradation in THz range.

NIR-THz spectral splitter is used for separation of pump radiation (centered in the wavelength range 790-800 nm) from THz radiation in Ti:Sapphire laser and MIR-THz  spectral splitter – for separation of pump radiation (9.6 μm and 10.6 μm) from THz radiation in THz laser optically pumped by CO₂ -laser.

Common specification:

Splitter Type NIR-THz spectral splitter MIR-THz spectral splitter Material of substarate - HRFZ-Si - THz-grade crystal quartz Dimensions tolerance, mm +/-0.25 Clear aperture, % 90 Surface quality, scr/dig 60/40 Surface accuracy, mm +/-0.01 deviation from ideal plane Coating High-reflection dielectric coating (R>90%) @ 730-860 nm High-reflection dielectric coating (R>90%) @ 9-11µm  Angle of incidence, arc. grad.  45

Typical reflection and transmission curves are shown below

Fig. 1. Reflection of NIR-THz spectral splitter (two types of substrate).

Fig. 2. Transmission  of NIR-THz spectral splitter (two types of substrate).

 

Fig. 3. Reflection of MIR-THz spectral splitter (two types of substrate).

Fig. 4. Transmission of MIR-THz spectral splitter (two types of substrate).

 

The following NIR-THz and MIR-THz Spectral Splitters are available from stock:

No.	Diameter		Thickness,  mm
	mm	inches
1	25.4	1.0	1.0
2	50.8	2.0	1.0

Please check Optics stock.
Custom designs are available upon request.
For price quotation and delivery please fill in our Request Form.